I spent the entire day going back to square one, as it were. I had the older generations of the Cantrell family. I broke them down into family units, so I could create King Aaron's parents; King Nicholas and Queen Alice; and King George and Queen Christina. This gives me four generations counting Joseph, Sr. Cantrell and his wife, Louise. I've since made some clarity. Since his uncle is the first Joseph Allistair Cantrell, I've made my Joseph Cantell, II. I think in the long run this will help others keep up. I made certain Joseph II and Louise were married. I played with the first group, so I would have urns of King George and Christina. Broke the family down again, so I could have urns of King Nicholas and Alice; then just King Aaron and Julianna and their kids were left. This was the third group. I played them because Michael, Joseph's next younger brother died as a kid (teen) he worked out far too hard. Then their father died of old age. Lastly, their mother died of a broken heart. I had Joseph A. Cantrell I, take the throne, while Joseph Cantrell II, left the family.
After all of this and also making certain my Joseph had his full family tree (which he did, yay), I emptied the faux Joseph's inventory so my Joseph could have the urns. Then I deleted the doppelganger. Joseph II still has his full family tree. (yay). But after all of this rigmarole, suddenly Joe and Louise are cousins. I decided to just stick with the new one, since it shows more generations on the tree.
I can only hope that sometime in the cough-cough, near future, EA will sort this out. Pretty Please!